| /* |
| * Copyright (c) 2017 ARM Limited. |
| * |
| * SPDX-License-Identifier: MIT |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in all |
| * copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| #include "Sobel.h" |
| |
| #include "Utils.h" |
| #include "tests/validation/Helpers.h" |
| |
| #include <array> |
| #include <map> |
| #include <utility> |
| |
| namespace arm_compute |
| { |
| namespace test |
| { |
| namespace validation |
| { |
| namespace reference |
| { |
| namespace |
| { |
| const std::array<int8_t, 9> sobel_3_x{ { -1, 0, 1, -2, 0, 2, -1, 0, 1 } }; |
| const std::array<int8_t, 9> sobel_3_y{ { -1, -2, -1, 0, 0, 0, 1, 2, 1 } }; |
| |
| const std::array<int8_t, 25> sobel_5_x{ { |
| -1, -2, 0, 2, 1, |
| -4, -8, 0, 8, 4, |
| -6, -12, 0, 12, 6, |
| -4, -8, 0, 8, 4, |
| -1, -2, 0, 2, 1 |
| } }; |
| |
| const std::array<int8_t, 25> sobel_5_y{ { |
| -1, -4, -6, -4, -1, |
| -2, -8, -12, -8, -2, |
| 0, 0, 0, 0, 0, |
| 2, 8, 12, 8, 2, |
| 1, 4, 6, 4, 1 |
| } }; |
| |
| const std::array<int8_t, 49> sobel_7_x{ { |
| -1, -4, -5, 0, 5, 4, 1, |
| -6, -24, -30, 0, 30, 24, 6, |
| -15, -60, -75, 0, 75, 60, 15, |
| -20, -80, -100, 0, 100, 80, 20, |
| -15, -60, -75, 0, 75, 60, 15, |
| -6, -24, -30, 0, 30, 24, 6, |
| -1, -4, -5, 0, 5, 4, 1 |
| } }; |
| |
| const std::array<int8_t, 49> sobel_7_y{ { |
| -1, -6, -15, -20, -15, -6, -1, |
| -4, -24, -60, -80, -60, -24, -4, |
| -5, -30, -75, -100, -75, -30, -5, |
| 0, 0, 0, 0, 0, 0, 0, |
| 5, 30, 75, 100, 75, 30, 5, |
| 4, 24, 60, 80, 60, 24, 4, |
| 1, 6, 15, 20, 15, 6, 1 |
| } }; |
| |
| const std::map<int, std::pair<const int8_t *, const int8_t *>> masks |
| { |
| { 3, { sobel_3_x.data(), sobel_3_y.data() } }, |
| { 5, { sobel_5_x.data(), sobel_5_y.data() } }, |
| { 7, { sobel_7_x.data(), sobel_7_y.data() } }, |
| }; |
| |
| template <typename T> |
| struct data_type; |
| |
| template <> |
| struct data_type<int16_t> |
| { |
| const static DataType value = DataType::S16; |
| }; |
| |
| template <> |
| struct data_type<int> |
| { |
| const static DataType value = DataType::S32; |
| }; |
| } // namespace |
| |
| template <typename T, typename U> |
| std::pair<SimpleTensor<T>, SimpleTensor<T>> sobel(const SimpleTensor<U> &src, int filter_size, BorderMode border_mode, uint8_t constant_border_value, GradientDimension gradient_dimension) |
| { |
| SimpleTensor<T> dst_x(src.shape(), data_type<T>::value, src.num_channels()); |
| SimpleTensor<T> dst_y(src.shape(), data_type<T>::value, src.num_channels()); |
| |
| ValidRegion valid_region = shape_to_valid_region(src.shape(), border_mode == BorderMode::UNDEFINED, BorderSize(filter_size / 2)); |
| |
| for(int i = 0; i < src.num_elements(); ++i) |
| { |
| Coordinates coord = index2coord(src.shape(), i); |
| |
| if(!is_in_valid_region(valid_region, coord)) |
| { |
| continue; |
| } |
| switch(gradient_dimension) |
| { |
| case GradientDimension::GRAD_X: |
| apply_2d_spatial_filter(coord, src, dst_x, TensorShape{ static_cast<unsigned int>(filter_size), static_cast<unsigned int>(filter_size) }, masks.at(filter_size).first, 1.f, border_mode, |
| constant_border_value); |
| break; |
| case GradientDimension::GRAD_Y: |
| apply_2d_spatial_filter(coord, src, dst_y, TensorShape{ static_cast<unsigned int>(filter_size), static_cast<unsigned int>(filter_size) }, masks.at(filter_size).second, 1.f, border_mode, |
| constant_border_value); |
| break; |
| case GradientDimension::GRAD_XY: |
| apply_2d_spatial_filter(coord, src, dst_x, TensorShape{ static_cast<unsigned int>(filter_size), static_cast<unsigned int>(filter_size) }, masks.at(filter_size).first, 1.f, border_mode, |
| constant_border_value); |
| apply_2d_spatial_filter(coord, src, dst_y, TensorShape{ static_cast<unsigned int>(filter_size), static_cast<unsigned int>(filter_size) }, masks.at(filter_size).second, 1.f, border_mode, |
| constant_border_value); |
| break; |
| default: |
| ARM_COMPUTE_ERROR("Gradient dimension not supported"); |
| } |
| } |
| |
| return std::make_pair(dst_x, dst_y); |
| } |
| |
| template std::pair<SimpleTensor<int16_t>, SimpleTensor<int16_t>> sobel(const SimpleTensor<uint8_t> &src, int filter_size, BorderMode border_mode, uint8_t constant_border_value, |
| GradientDimension gradient_dimension); |
| template std::pair<SimpleTensor<int>, SimpleTensor<int>> sobel(const SimpleTensor<uint8_t> &src, int filter_size, BorderMode border_mode, uint8_t constant_border_value, |
| GradientDimension gradient_dimension); |
| } // namespace reference |
| } // namespace validation |
| } // namespace test |
| } // namespace arm_compute |